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    question on box build, whats my box tuned to?

    i built a box drawn up by moe lester and for some reason my port ended up being about 3" instead of 2.5".. could someone calculate what my box is tuned to for me please... thanks alot


    these are the box plans i went by but eneded up with 3" port instead of a 2.5"

    http://img29.imageshack.us/img29/733...125sqin0zp.png



    Pontiac Grand Prix GTP
    Head Unit: Pioneer DEH-P6800MP
    Sub: JL 12w6v2
    Enclosure: Sealed @1.25cuft
    Sub Amp: Kicker 750.1
    Speaker Amp: Kicker 350.4
    Fronts: Boston Acoustic S55
    Rears: Kenwood KFC-6989ie
    Big 3 w/ Optima Yellow Top




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    Re: question on box build, whats my box tuned to?

    It's tuned to ~33-34Hz



    Car Audio System:
    Head Unit: Alpine CDA-9815RB
    Front: 2 x Alpine SPR-17LS
    Subwoofer: 2 x Alpine SWR-1222d
    Amplifier: Alpine MRV-F545 for components
    Amplifier: Adassa Audio The Warlord for subs

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    Re: question on box build, whats my box tuned to?

    so a half inch wider port only ended up being about ~1-2hz higher.. ((the box was tuned to 32hz at a 2.5" port))...for some reason i thought it would have made a bigger difference than that... thats not bad then..
    Last edited by foomasta69; 07-03-2007 at 08:10 AM.



    Pontiac Grand Prix GTP
    Head Unit: Pioneer DEH-P6800MP
    Sub: JL 12w6v2
    Enclosure: Sealed @1.25cuft
    Sub Amp: Kicker 750.1
    Speaker Amp: Kicker 350.4
    Fronts: Boston Acoustic S55
    Rears: Kenwood KFC-6989ie
    Big 3 w/ Optima Yellow Top

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    Re: question on box build, whats my box tuned to?

    anybody want to double check that???



    Pontiac Grand Prix GTP
    Head Unit: Pioneer DEH-P6800MP
    Sub: JL 12w6v2
    Enclosure: Sealed @1.25cuft
    Sub Amp: Kicker 750.1
    Speaker Amp: Kicker 350.4
    Fronts: Boston Acoustic S55
    Rears: Kenwood KFC-6989ie
    Big 3 w/ Optima Yellow Top

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    Trixter is offline Keepin it Simple



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    Re: question on box build, whats my box tuned to?

    just under 34hz



    2006 Jeep Liberty
    Adire Audio, Cadence, Clarion, MB Quart

    Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
    *Vb = vol. in cu"
    **R = sq.rt. A / Pi (for square/slot port)

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    Re: question on box build, whats my box tuned to?

    thats pretty sweet that a half inch wider port only upps the freq by not even 2hz... leaves a little room for slight error like the stupid stuff i pulled while makeing this box... good stuff



    Pontiac Grand Prix GTP
    Head Unit: Pioneer DEH-P6800MP
    Sub: JL 12w6v2
    Enclosure: Sealed @1.25cuft
    Sub Amp: Kicker 750.1
    Speaker Amp: Kicker 350.4
    Fronts: Boston Acoustic S55
    Rears: Kenwood KFC-6989ie
    Big 3 w/ Optima Yellow Top

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    PV Audio is offline The Vision of Sound



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    Re: question on box build, whats my box tuned to?

    No, a narrower port makes the tuning lower.




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